package cn.spdb.harrier.api.security.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.CorsFilter;

import cn.spdb.harrier.api.security.filter.JwtAuthenticationTokenFilter;
import cn.spdb.harrier.api.security.handle.AuthenticationEntryPointImpl;
import cn.spdb.harrier.api.security.handle.AuthenticationFailureHandlerImpl;
import cn.spdb.harrier.api.security.handle.LogoutSuccessHandlerImpl;
import cn.spdb.harrier.api.service.system.impl.UserDetailsServiceImpl;

@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

	/**
	 * 自定义用户认证逻辑
	 */

	@Autowired
	private UserDetailsServiceImpl userDetailsService;
	/**
	 * 认证失败处理类
	 */
	@Autowired
	private AuthenticationEntryPointImpl unauthorizedHandler;

	/**
	 * 退出处理类
	 */
	@Autowired
	private LogoutSuccessHandlerImpl logoutSuccessHandler;

	@Autowired
	private AuthenticationFailureHandlerImpl authenticationFailure;

	/**
	 * token认证过滤器
	 */
	@Autowired
	private JwtAuthenticationTokenFilter authenticationTokenFilter;

	/**
	 * 跨域过滤器
	 */
	@Autowired
	private CorsFilter corsFilter;

	/**
	 * 解决 无法直接注入 AuthenticationManager
	 *
	 * @return
	 * @throws Exception
	 */
	@Bean
	@Override
	public AuthenticationManager authenticationManagerBean() throws Exception {
		return super.authenticationManagerBean();
	}

	 /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
	@Override
	protected void configure(HttpSecurity httpSecurity) throws Exception {
		httpSecurity
				// CSRF禁用，因为不使用session
				.csrf().disable()
				// 认证失败处理类
				.cors().and().exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
				// 基于token，所以不需要session
				.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
				// 过滤请求
				.authorizeRequests()
				// 对于登录login 注册register 验证码captchaImage 允许匿名访问
				.antMatchers("/login", "/login/selectCaptchaOnOff","/user/captchImage","/register","/register/selectCaptchaOnOff", "/user/sendRegistervaricode","/captchaImage", "/user/selectUserToCode", "/user/sendvaricode","/user/*/codeExists", "/user/forgotPwd", "/file/loadFile").anonymous()
				.antMatchers(HttpMethod.GET, "/","/*.html","/static/**","/*.ico")
				.permitAll()
				.antMatchers("/swagger-ui.html").anonymous()
				.antMatchers("/swagger-resources/**").anonymous()
				.antMatchers("/druid/**").anonymous()
				// 除上面外的所有请求全部需要鉴权认证
				.anyRequest().authenticated().and().headers().frameOptions().disable();

//		httpSecurity.formLogin().loginProcessingUrl("/login").failureHandler(authenticationFailure);
		httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
		// 添加JWT filter
		httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
		// 添加CORS filter
		httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
		httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
	}

	/**
	 * 强散列哈希加密实现
	 */
	@Bean
	public BCryptPasswordEncoder bCryptPasswordEncoder() {
		return new BCryptPasswordEncoder();
	}

	/**
	 * 身份认证接口
	 */
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		super.configure(auth);
//		auth.inMemoryAuthentication().withUser("admin").password("admin123").roles("admin");
		auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
	}

	public static void main(String[] args) {
		BCryptPasswordEncoder bCryptPasswordEncoder = new BCryptPasswordEncoder();
		String passwd="admin123";
		System.out.println("mima: "+bCryptPasswordEncoder.encode(passwd));
	}
}
